Long-term Durability Evaluation of Concrete and Construction of Exposure Environment

混凝土长期耐久性评价及暴露环境施工

• 批准号: 18206047
• 负责人: HISADA Makoto
• 金额: $ 22.38万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18206047/
• 关键词: Durability; Concrete; Monitor; Meteorological Environment; Compressive Strength; Maximum Temperature; Lowest Temperature; 暴露環境モニタリング; 温度; 湿度

The purpose of this study is to evaluate the durability of concrete through the nation-wide testing and local climate monitoring. The test has been started since 2003, and still continuing.From these investigations, following conclusion was clarified.A. For the first year(1) The climate condition at Tsukuba was much severe than that at Kurihama in both summer and winter. In other word, Tsukuba was colder than Kurihama in winter season, and Tsukuba was hotter than Kurihama in summer season.(2) Therefore, the compressive strength of concrete exposed in Tsukuba were remarkably influenced more than that in Kurihama.B. For the fifth year(1) From the results of climate condition at 17 places, several classifications could be done as the influent condition for the durability of concrete.(2) The curing condition at early stage of concrete production is quite important for the long term durability of concrete.

本研究的目的是通过全国范围内的测试和当地气候监测来评估混凝土的耐久性。试验从2003年开始，至今仍在进行中，通过这些调查，得出以下结论：第一年（1）无论是夏季还是冬季，筑波的气候条件都比栗滨严重得多。也就是说，筑波在冬季比栗滨冷，而筑波在夏季比栗滨热。(2)因此，混凝土的抗压强度在筑波暴露比在栗滨显着影响更大。第五年（1）根据17个地点的气候条件，可将影响混凝土耐久性的条件分为几类。(2)混凝土生产初期的养护条件对混凝土的长期耐久性至关重要。

项目成果

Changing of Various Solutions Passing through the Crack of Reinforced Concrete

穿过钢筋混凝土裂缝的各种方案的变化

• 发表时间: 2007
• 作者: Nishimura;T.;Toyota;H.;Oh;W.T. and Vanapalli;S.K.;渡邊法美;Makoto HISADA
• 通讯作者: Makoto HISADA